Messages in this thread | | | Subject | Re: [PATCH] Fixes hang in zstd compression test by changing the source of random data. | From | Alexey Budankov <> | Date | Fri, 23 Aug 2019 09:00:10 +0300 |
| |
On 22.08.2019 16:55, James Clark wrote: > Running 'perf test' with zstd compression linked will hang at the test > 'Zstd perf.data compression/decompression' because /dev/random blocks > reads until there is enough entropy. This means that the test will > appear to never complete unless the mouse is continually moved while > running it. > > Signed-off-by: James Clark <james.clark@arm.com> > --- > tools/perf/tests/shell/record+zstd_comp_decomp.sh | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tools/perf/tests/shell/record+zstd_comp_decomp.sh b/tools/perf/tests/shell/record+zstd_comp_decomp.sh > index 899604d1..63a91ec 100755 > --- a/tools/perf/tests/shell/record+zstd_comp_decomp.sh > +++ b/tools/perf/tests/shell/record+zstd_comp_decomp.sh > @@ -13,7 +13,7 @@ skip_if_no_z_record() { > collect_z_record() { > echo "Collecting compressed record file:" > $perf_tool record -o $trace_file -g -z -F 5000 -- \ > - dd count=500 if=/dev/random of=/dev/null > + dd count=500 if=/dev/urandom of=/dev/null
Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com>
~Alexey
> } > > check_compressed_stats() { >
| |